Vendorize the submodules and a simple CMake build
system for all them. The dependencies will inherit
compilation options for core.
The goal is to make Mapbox GL Core completely self
contained with a simple offline build.
- Port of arabic.test.js from mapbox-gl-rtl-text
- Modify BiDi::getLine to remove trailing nulls in the event UBIDI_REMOVE_BIDI_CONTROLS causes the string to shorten.
- Patch vendored ICU to avoid undefined undefined bit shifting behavior (triggered sanitizer failure)
